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Fix lockfree queue size and full check #203

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merged 1 commit into from
Oct 26, 2023
Merged

Fix lockfree queue size and full check #203

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5 changes: 4 additions & 1 deletion common/lockfree_queue.h
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Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,9 @@ struct Capacity_2expN<0> {
template <>
struct Capacity_2expN<1> : public Capacity_2expN<0> {};

template <>
struct Capacity_2expN<2> : public Capacity_2expN<0> {};

struct PauseBase {};

struct CPUPause : PauseBase {
Expand Down Expand Up @@ -136,7 +139,7 @@ class LockfreeRingQueueBase {
bool check_empty(size_t h, size_t t) const { return h == t; }

bool check_full(size_t h, size_t t) const {
return check_mask_equal(h, t + 1);
return h != t && check_mask_equal(h, t);
}

size_t idx(size_t x) const { return x & mask; }
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